10 Steps to Improve Your
Brainpower By Steve Edwards
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We know that exercise will help us look
better in a bathing suit, but most of us aren't aware of how important it is
when it comes to brain function. While common lore suggests that jocks are dumb
and brainiacs rarely leave the research lab, science paints a different picture
- one wherein the fitter you are, the smarter you become. Let's look at 10 ways
to improve your cognitive abilities.
 Aerobic exercise. In the 1990s, a now-famous
experiment was done on mice at The Salk Institute of Biological Science in San
Diego. Two groups of mice led similar lifestyles, with one difference, an
exercise wheel for some to play on. The group with the treadmills dominated the
other in a series of cognitive tests.
This should not be surprising,
given that oxygen is vital for every human function, and by definition, aerobic
exercise circulates oxygen. But, many further tests have been done, and we now
know that we can train our brains the same way we train our muscles, and our
brains will respond in a similar fashion. In fact, our brains continue to
regenerate neurons until we die. The mice with treadmills in their cages
produced two to three times the number of neurons produced by the non-treadmill
group.
- Anaerobic exercise.
Anaerobic exercise includes short bouts of intense
movement that don't use oxygen. Most of us know that this is how we build
muscle, but the same hormones released during this process also improve brain
function. Even training our muscles improves how our brains work. "Muscle
activity is a cue to keep a synapse stable, and synaptic inactivity is a cue to
disassemble a synapse," stated Jeff W. Lichtman, M.D., Ph.D., at Washington
University School of Medicine in St. Louis in Science Magazine. "So if
you lose activity, you lose receptors. But if you regain activity, you get
those receptors back."
 Try
something new. New activities force an adaptation process
on your brain as much as on your muscles. In
P90X®, we call it "Muscle
Confusion," but the brain is what's stimulated first, and it's exercised just
as much as the targeted muscles. If you've ever wondered why we have so many
different types of workouts, now you have your answer. New activity stimulates
the mind and body alike.
- Visualize.
When you don't have time to exercise, don't put it out of
your mind. Instead, try focusing on physical tasks that you'd like to do when
you have the time. A study in 2001 showed that you can increase muscle strength
by just thinking about it. Over a 12-week period, a study done on visualization
by the Cleveland Clinic showed that strength could be increased by
concentrating on it for 5 minutes a day. Brain scans showed "greater and more
focused" activity in the prefrontal cortex after 12 weeks, leading to the
assumption that the strength gains were due to improvements in the brain's
ability to signal muscle.
 Eat better. Your brain only
weighs about 2 percent of your body weight but uses 20 percent of the oxygen
and nutrients you take in. If your body is starving for nutrients and needs
those that it's getting for survival functions, your brain activity will
suffer.
- Relax. Finding ways to de-stress is vital for efficient brain function
as anxiety and stress destroy neurons. Meditating or having fun with friends
(especially if you laugh a lot) can keep your anxiety levels under control. The
same goes for beginning your day with a relaxing morning ritual, like this
Good Day Sunshine
routine, which will stimulate your brain with positive thoughts that can
proactively reduce your stress levels.
 Travel.
The forced stimuli that travel induces have been shown to
have a great benefit on your brain function. There is nothing quite like
immersing yourself in a foreign culture wherein you don't understand the
language to force your brain into a survival mode that leads to accelerated
adaptation.
- Stay hydrated.
Our bodies are nearly 70 percent water, but the brain is
closer to 90 percent. Water composes more of the brain than any other organ,
which is why you find it hard to think when you're extremely hot and/or
dehydrated.
 Stretch.
In daily life, our muscles contract and become tighter. We
become less flexible. Most of us are at least somewhat aware that this hinders
our physical abilities, but it also reduces our mental capacities. There are
many books that advocate "brain exercises," and while certainly helpful, most
of these are fairly simple stretches that we wouldn't need to do if we actually
exercised properly. Stretching helps oxygen transport, helps you de-stress, and
actually aids every physical process discussed above. Taking a few minutes a
couple of times a day to lightly stretch and thoroughly warming up and cooling
down after exercise will keep your brain feeling supple and
sharp.
- Break routines.
Doing things differently helps keep your brain from
getting complacent. Small acts like getting dressed differently, closing your
eyes during mundane tasks, using your computer mouse with your opposite hand,
and so on are part of something called Neurobics™, a system to exercise
your brain created by Lawrence C. Katz, Ph.D., a professor of neurobiology at
Duke University Medical Center.
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